Will is trying to save up money to buy a swanky new laptop he's seen. It could take a very long time but it means he's keen to volunteer for extra jobs - as long as there is cash to be earned. This has led to some interesting 'full and frank exchanges of opinion' about which jobs are just part of what you do to pull your weight in a family and which are for financial reward. Mowing the lawn is a borderline case in my view - but he did do it so willingly that some money exchanged hands! Storm on the other hand ran up and down barking at the lawnmower, which I'm sure he felt contributed greatly to the efficiency of the operation!
He is doing a very good job! Maybe before the cash changing hands vs the we put food on the table and a roof over your head gets out of hand a round table conference may in order with clear guide lines set out on paper agreed to by all parties.